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Finding the Fourth Proportional to 146,755.60, 220,133.40 and 76,656.40

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Solution

The fourth proportional to 146,755.60, 220,133.40 and 76,656.40 is: 114,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,755.60 : 220,133.40 = 76,656.40 : x
  2. Step 2: Convert to fraction form
    146,755.60/220,133.40 = 76,656.40/x
  3. Step 3: Cross multiply
    146,755.60x = 220,133.40 × 76,656.40
  4. Step 4: Simplify right side
    146,755.60x = 16,874,633,963.76
  5. Step 5: Solve for x
    x = 16,874,633,963.76/146,755.60
  6. Step 6: Final answer
    x = 114,984.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.